Top five most popular fan fiction genres

In fan faction, writers move characters around in "what if" scenarios, plop them in different settings and expand on storylines where anything goes. (Hector Casanova/The Kansas City Star/MCT)

On www.FanFiction.net -- an online archive for those who put their own spins on existing books, TV shows, movies and comic books -- there are hundreds of thousands of "fan fiction" works. Here are the top five genres on this archive alone: